The team’s fear is a torn Achilles’ tendon for the seventh-year linebacker, Ian Rapoport of NFL.com tweets. Bowman told Maiocco his MRI will be on the Achilles in question, which caused Bowman to leave the game after sustaining the injury on a non-contact sequence.

While it’s the same left leg Bowman damaged against the Seahawks nearly three years ago, Maiocco notes this injury is not related to what happened in the 2013 NFC title game.

Bowman has played 20 games since returning from the gruesome malady that sidelined him throughout 2014. The 49ers underwent significant changes while he was shelved, but the 28-year-old inside linebacker still returned and garnered first-team All-Pro acclaim last season. The 49ers then signed Bowman to a four-year, $44MM extension that stands to keep him in San Francisco through the 2022 season.

The former third-round pick and Patrick Willis‘ longtime running mate during the 49ers’ run to NFC championship games, Bowman has four first-team All-Pro honors to his credit despite playing in just five full seasons, giving him one of the greatest such ratios in NFL history for any position. Bowman earned first-team All-Pro honors in 2011, ’12, ’13 and ’15. After missing the entire 2014 campaign, he made 154 tackles and 2.5 sacks last season for a rebuilding San Francisco operation.

Bowman registered eight tackles and a sack, his first of the season, Sunday before leaving the game.